Note 2359 — BOOK IX. THE NATURAL HISTORY OF FISHES.
John Bostock translation
Pliny has already remarked, B. iii. c. 18, in reference to the supposed descent of the Argonauts from the Ister into the Adriatic, that such a passage by water was totally impossible; hence, as Hardouin says, he is obliged here to have recourse to subterraneous passages.